1. Department of Organic Chemistry, Faculty of Agricultural and Applied Biological Sciences, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium, Department of Biochemical Pharmacology, Janssen Research Foundation, Turnhoutseweg 30, B-2340 Beerse, Belgium, Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Via Pietro Giuria 9, I-10125 Torino, Italy, Department of Analytical Medicinal Chemistry, Janssen Research Foundation, Turnhoutseweg 30, B-2340 Beerse, Belgium, Botany...